Note 2 - Fair Value of Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Selling Costs	10.00%
Impaired Financing Receivable, with Related Allowance, Recorded Investment		$ 1,979
Impaired Financing Receivable, Related Allowance		1,979
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down		2,479
Other Real Estate	2,617
Other Real Estate, Gross	4,214
Real Estate Owned, Valuation Allowance	1,597
Real Estate, Write-down or Reserve, Amount	$ 331

No authoritative reference available.

No definition available.

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- Definition

No authoritative reference available.

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No definition available.

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- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 4

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Amount of allowance for credit losses related to recorded investment.

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-SubTopic 10

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Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

+ References

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-Publisher FASB

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Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 210

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For each period for which an income statement is required, disclosure of the changes in the allowance, including balances at end of period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher OTS

-Name Federal Regulation (FR)

-Number Title 12

-Section 563c.102

-Paragraph 11

-Chapter V

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The amount of any write-down or reserve provided in the period on a real estate investment.

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-Publisher FASB

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-Topic 970

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